Bolens 247.77010 User Manual [en, es]
Operator’s Manual
CRHFTSMBli
4.5 Horse Power
YARD VACUUM
Model No. 247.77010
CAUTION: Before using
this product, read this
manuai and foiiow ali
Safety Ruies and
Operating Instructions.
Sears, Roebuck and Co., Hoffman Estates, iL 60179, U.S.A.
Visit our Sears website: www.sears.com/craftsman
Printed in U.S.A.
Safety
Assembiy
Operation
Maintenance
Parts
Españoi
770-10233B
(6/99)
TABLE OF CONTENTS
Content
Warranty
Safety
Assembly
Operation
Maintenance
Page Content
2
3
5 Troubleshooting
7
10
Service and Adjustments
Storage 14
Parts List
Page
WARRANTY
One-Year Warranty on Craftsman Yard Vacuum
For one year from the date of purchase, when this Craftsman Yard Vacuum is maintained, lubricated, and tuned
up according to the operating and maintenance instructions in the owner’s manual, Sears will repair, free of
charge, any defect in material or workmanship.
This warranty excludes blades, chipper blades, flails, air cleaners, spark plugs, catcher bags and tires which are
expendable parts and become worn during normal use.
WARRANTY SERVICE IS AVAILABLE BY CONTACTING THE NEAREST SEARS SERVICE CENTER IN THE
UNITED STATES. THIS WARRANTY APPLIES ONLY WHILE THIS PRODUCT IS IN USE IN THE UNITED
STATES.
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15
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This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
Sears, Roebuck and Co., D/817WA, Hoffman Estates, II60179
PRODUCT SPECIFICATION
Horsepower: 4.5 Horse Power
Engine Oil Type SAE30
Engine Oil Capacity 20 Ounces
Fuel Capacity:
Spark Plug Champion RJ-19LM
Spark Plug Gap
1 1/2 Quarts
.030”
Model Number
Serial Number
Date of Purchase.
Record both serial number and date of purchase and
keep in a safe place for future reference.
.....
......
247.77010
WARNING: This symbol points out important safety instructions which, If not followed,
could endanger the personal safety and/or property of yourself and others. Read and follow
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all instructions in this manual before attempting to operate your Yard Vacuum. Failure to
comply with these instructions may result in personal injury. When you see this symbol,
heed its warning.
WARNING: The Engine Exhaust from this product contains chemicals known to
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1. GENERAL OPERATION
the State of California to cause cancer, birth defects or other reproductive harm.
WARNING: Your Yard Vacuum was manufactured to be operated according to the rules for safe
operation in this manual. As with any type of power equipment, carelessness or error on the part of
the operator can result in serious injury. This unit is capable of amputating fingers and hands and
throwing objects. Failure to observe the following safety instructions could result in serious injury or
death.
• Read this operator's manual carefully In Its entirety
before attempting to assemble this machine. Read,
understand, and follow all instructions on the
machine and in the manuai(s) before operation. Be
completely familiar with the controls and the proper
use of the machine before operating It. Keep this
manual in a safe place for future and regular refer
ence and for ordering replacement parts.
• Your Yard Vacuum is a powerful tool, not a play
thing. Therefore, exercise extreme caution at all
times. Your unit has been designed to chip, shred,
vac, and blow (if equipped with attachment) vegeta
tion found in a normal yard. Do not use it for any
other purpose.
• Never allow children under 16 to operate the unit.
Children 16 years and older should only operate
under close parental supervision. Only responsible
Individuals who are familiar with these rules of safe
operation should be allowed to use your unit.
• Keep the area of operation clear of all persons, par
ticularly small children. Stop the engine when they
are in the vicinity of the unit.
• When feeding material Into this equipment, be
extremely careful that pieces of metal, rocks, bot
tles, cans or other foreign objects are not included.
Personal injury or damage to the machine could
result.
• Always wear approved safety glasses or safety
goggles, during operation and while performing an
adjustment or repair, to protect eyes from foreign
objects that may be thrown from the machine.
• Wear sturdy, rough-soled work shoes and close fit
ting slacks and shirt. Shirt and slacks that cover the
arms and legs and steel-toed shoes are recom
mended. Do not wear loose fitting clothes or jew
elry, and secure hair above shoulder length. They
can be caught in moving parts. Never operate a
unit in bare feet, sandals or sneakers. Wear gloves
when feeding material In the chipper chute.
SAFETY
Do not operate the unit while under the Influence of
alcohol or drugs.
Do not overreach. Keep proper footing and bal
ance at all times.
Never place your hands or any part of your body or
clothing near rotating parts. Keep clear of the dis
charge opening at all times. Never insert your
hands or any part of your body or clothing into the
nozzle, chipper chute or discharge opening as the
rotating impeller can cause serious injury.
If It is necessary for any reason to unclog the feed
intake or discharge openings or to inspect or repair
any part of the machine where a moving part can
come in contact with your body or clothing, stop the
machine, allow it to cool, disconnect the spark plug
wire from the spark plug and move it away from the
spark plug before attempting to unclog, inspect or
repair.
Never operate unit without vacuum bag or if
equipped with blower chute properly affixed to unit.
Large open end of bag must be closed to prevent
objects from being blown out rear of bag.
If operating in the blower mode (optional blower
chute attachment may be included with your unit):
• Do not stand or walk in front of blower dis
charge or aim it at bystanders, pets, vehicles,
etc. Objects thrown out the discharge can
cause personal injury or property damage.
• Do not direct blower discharge against a wall
or other vertical obstruction. Discharged mate
rial may ricochet back at operator.
• Adjust vac nozzle height to highest position to
reduce likelihood of heavier objects (e.g., small
stones, pieces of glass or metal) being picked
up and thrown out the discharge. Raising noz
zle to highest position also maximizes air
intake for improved blowing performance.
• Never attempt to remove or empty vacuum bag
when engine is running. Shut the engine off and
wait for the impeller to come to a complete stop
before removing the bag. The impeller continues to
rotate for a few seconds after the engine is shut off.
Never place any part of the body in the impeiler
area until you are sure the impeller has stopped
rotating.
• Keep all guards and safety devices in place and
operating properiy.
• Do not ailow an accumulation of processed mate
rial to build up in the discharge area as this will pre
vent proper discharge.
• When feeding material into the chipper, do not
stand with your face or body directly in front of the
chipper chute. Stand to one side. Material being
feed may bounce back out of the chute.
• If the cutting mechanism strikes a foreign object or
if your machine should start making an unusual
noise or vibration, immediately stop the engine, dis
connect the spark plug wire and move the wire
away from the spark plug. Allow the machine to
stop and take the following steps.
• Inspect for damage
• Repair or replace any damaged parts.
• Check for any loose parts and tighten to
assure continued safe operation.
• Muffler and engine become hot and can cause a
burn. Do not touch.
• Do not allow leaves or other debris to build up on
engine’s muffler. The debris could ignite and cause
a fire.
• Do not operate engine if air cleaner or cover over
carburetor air intake is removed, except for adjust
ment. Removal of such parts could create a fire
hazard.
2. CHILDREN
Tragic accidents can occur if the operator is not alert to the
presence of small children. Children are often attracted to
the chipping and vacuuming activity. Never assume that
children will remain where you last saw them.
• Keep children out of the work area and under the
watchful eye of a responsible adult other than the
operator.
• Be alert and turn the unit off if a child enters the
area.
• Never allow children under the age of 16 to oper
ate the Yard Vacuum.
3. SERVICE
Use extreme care in handling gasoline and other
fuels. They are extremely flammable and the
vapors are explosive.
• Store fuel and oil in approved containers, away
from heat and open flame, and out of the reach
of children.
• Check and add fuel before starting the engine.
Never remove gas cap or add fuel while the
engine is running. Allow engine to cool at least
two minutes before refueling.
• Replace gasoline cap securely and wipe off
any spilled gasoline before starting the engine
as it may cause a fire or explosion.
• Extinguish all cigarettes, cigars, pipes and
other sources of ignition.
• Never refuel unit indoors because flammable
vapors will accumulate in the area.
• Never store the machine or fuel container
inside where there is an open flame or spark
such as a gas hot water heater, clothes dryer
or furnace.
Never run your machine in an enclosed area as the
exhaust from the engine contains carbon monox
ide, which is a odorless, tasteless and deadly poi
sonous gas.
To reduce fire hazard, keep engine and muffler free
of leaves, grass, and other debris build-up. Clean
up fuel and oil spillage. Allow unit to cool at least 5
minutes before storing.
Before cleaning, repairing, or inspecting, make cer
tain the impeller and all moving parts have stopped.
Disconnect the spark plug wire and keep wire away
from spark plug to prevent accidental starting. Do
not use flammable solutions to clean air filter.
Keep all nuts, bolts, and screws tight to be sure the
equipment is in safe working condition.
Never tamper with safety devices. Check their
proper operation regularly.
After striking a foreign object, immediately stop the
engine, disconnect the spark plug wire from the
spark plug, and thoroughly inspect the unit for any
damage. Repair damage before starting and oper
ating unit.
Do not alter or tamper with the engine’s governor
setting. The governor controls the maximum safe
operating speed of the engine. Overspeeding the
engine is dangerous and will cause damage to the
engine and to other moving parts of the machine.
Check the vacuum bag frequently for wear.
Replace if worn or damaged.
Keep vacuum bag free of debris when not in use.
ASSEMBLY
NOTE: To determine right and left hand sides of
your Yard Vacuum, stand behind the unit, in the
operating position. See Figure 1.
Your Yard Vacuum has been completely assembled
at the factory, except for the handle, bag, and blower
chute. These parts are shipped loose in the carton.
A pair of safety glasses and a 20-oz. bottle of engine
oil are also included in the carton. See Figure 1.
REMOVING FROM CARTON
• Cut the corners of the carton.
• Remove all loose parts.
• Remove packing material. Lift unit from the rear
LOOSE PARTS
See Figure 1.
1.
2.
3.
4.
5.
6.
and discard foam blocks. Roll unit out of carton.
Check carton thoroughly for loose parts.
Handle Assembly
Bag
Blower Chute Assembly
Safety Glasses (Not Shown)
A 20-oz. Bottle of Engine Oil (may be located in
bag)
Operator’s Manual
IMPORTANT: This unit is shipped without gasoline
or oil in the engine. After assembly, see OPERA
TION section of this manual for proper fuel and
engine oil fill-up.
DISCONNECTING SPARK PLUG
See Figure 2.
Before proceeding with assembly of your new Yard
Vacuum unit, disconnect the spark plug wire from
the spark plug and ground onto the retaining post on
the engine. This will prevent accidental starting of
the engine.
ATTACHING THE HANDLE
» Fold up the upper handle until it aligns with lower
handle. Make sure the rope guide is on the right
side of upper handle. See Figure 1.
® Secure by tightening the upper wing nuts which
connect the two handles together.
Remove the hairpin ciips from the handle brack
ets and the carriage screws and wing nuts from
the iower handle. See Figure 3.
Place lower handle over the pins on handle
brackets and secure with hairpin clips, carriage
screws, and wing nuts.
• The rope guide is attached to the right side of
upper handle. Loosen the wing nut which
secures the rope guide, but do not remove.
• Pull the starter rope out of the engine slowly and
slip the starter rope through the rope guide.
Tighten the wing nut.
ATTACHING THE BAG
See Figure 4
• Grasp bag handle with one hand and pull lock
ing rod with other hand toward engine, while
slipping bag over rim of discharge opening.
• Release locking rod so the ends are over the
front tab on the bag handle to secure in place.
• Snap bag clip to the top of the lower handle.
• Place the lower straps on the bag over the top
of lower handle, hooking them on the studs.
NOTE: The bag/chute switch button attached to
the mounting bracket must be fuily depressed by
the tip of front tab on bag handle when securing
the bag or engine will not start.
ATTACHING THE BLOWER CHUTE
See Figure 5
NOTE; The bag must be removed before installing
the blower chute.
• Grasp blower chute with one hand and pull lock
ing rod with other hand toward engine, while
slipping blower chute over rim of discharge
opening.
• Release locking rod so the ends are over the
front tab on the blower chute to secure in place.
• Raise the nozzle height to the highest setting
when using the blower chute. Refer to nozzle
height adjustment in the ADJUSTMENT sec
tion.
NOTE: The bag/chute switch button attached to
the mounting bracket must be fully depressed by
the tip of front tab on the blower chute or engine
will not start.
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OPERATION
Know Your Yard Vacuum
Read this operator’s manual and safety rules before operating your Yard Vacuum. Compare the illustrations
below with your equipment to familiarize yourself with the location of various controls and adjustments. Save
this manual for future reference.
The operation of any Yard Vacuum can result in foreign objects being thrown into the eyes,
which can result in severe eye damage. Always wear safety glasses, provided with the
Yard Vacuum, for operating this equipment or while performing any adjustments or repairs on
it.
OPERATING CONTROLS
Chipper Chute
Allows twigs and small branches up to 1 1/2” in diam
eter to be fed into the impeller for chipping.
Nozzle
Yard waste such as leaves and pine needles can be
vacuumed up through the nozzle for shredding.
Catcher Bag
Collects shredded material fed in through the chipper
chute or vacuumed in through the nozzle.
Blower Chute
When attached to unit, the blower chute is used to
blow or scatter yard waste such as leaves, pine nee
dle, or small twigs across yard.
Bag Handle
Used to grasp bag in order to assist in attaching,
removing, and emptying bag.
Nozzle Height Adjustment Lever
Used to adjust the nozzle ground clearance ranging
from 5/8" to 3 3/4".
Throttle Control / Choke Lever
This single lever controls the engine speed, stop func
tion, and the choke of the carburetor. Through four
separate positions on the lever from left to right, the
operation is as follows:
Engine
Off
Primer
The primer is used to assist in cold starting an engine.
Starter Handle
Used to start the engine.
Slow
Fast
Choke
Meets ANSI safety standards
draftsman Yard Vacuums conform to the safety standard of the American National Standards Institute (ANSI).
GAS AND OIL FILL-UP
Oil (one 20-oz. bottle shipped with unit)
Only use high quality detergent oil rated with API ser
vice classification SF, SG, or SH. Select the oil’s SAE
viscosity grade according to the expected operating
temperature. Follow the chart below.
Colder
5W30 SAE 30
32° F
Warmer
WARNING: Never fill the fuel tank indoors,
with engine running or while engine is hot.
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• Check the fuel level periodically to avoid running
Do not smoke when filling fuel tank. Do not
fill closer than 1/2 inch from the top of the
fuel tank to prevent spills and to allow for
fuel expansion.
out of gasoline while operating the Yard Vac
uum. If the unit runs out of gas as it is chipping, it
may be necessary to unclog the unit before it
can be restarted. Refer to SERVICE AND
ADJUSTMENT section.
Oil Viscosity Chart
NOTE: Although multi-viscosity oils (5W30, 10W30,
etc.) improve starting in cold weather, they will result
in increased oil consumption when used above 32°F.
Check your engine oil level more frequently to avoid
possible engine damage from running low on oil.
• Remove oil fill dipstick.
• With the Yard Vacuum on level ground, use a
funnel to fill engine with oil to FULL mark on dip
stick. Capacity is approximately 20 oz. Be care
ful not to overfill. Overfilling will cause the
engine to smoke profusely and will result in poor
engine performance. The oil bottle packaged
with your Yard Vacuum contains 20 oz. of oil.
• Check the oil level making certain not to rub the
dipstick along the inside walls of the oil fill tube.
This would result in a false dipstick reading.
Refill to FULL mark on dipstick, if necessary.
Replace dipstick and tighten.
• Check oil level three times prior to starting
engine to be certain you’ve gotten an accurate
dipstick reading. Running the engine with too lit
tle oil can result in permanent engine damage.
Gasoline
• Remove fuel cap from the fuel tank.
• Make sure the container from which you will
pour the gasoline is clean and free from rust or
foreign particles. Never use gasoline that may
be stale from long periods of storage in its con
tainer. Gasoline that has been sitting for any
period longer than four weeks should be consid
ered stale.
• Fill fuel tank with clean, fresh, unleaded regular,
unleaded premium or reformulated automotive
gasoline only. DO NOT use Ethyl or high octane
gasoline. Do not use gasoline containing
METHANOL. Replace fuel cap.
• To avoid engine problems, the fuel system
should be emptied before storage for 30 days or
longer. Drain the gas tank, start the engine and
let it run until the fuel lines and carburetor are
empty. Use fresh fuel next season. See STOR
AGE section for additional information.
TO STOP ENGINE
• Move throttle control lever to STOP position.
• Disconnect spark plug wire and ground it to the
post to prevent accidental starting while the
equipment is unattended.
TO START ENGINE
WARNING: Be sure no one other than the
operator is standing near the Yard Vacuum
A
1. Attach spark plug wire and rubber boot to spark
2. Make sure bag/chute switch is connected to
3. The bag/chute switch button must be fully
4. Gas tank should be filled 3/4 to full before start
5a. When temperature is above 32 degrees F;
while starting or operating. Do not operate
this unit unless the bag or blower chute have
been properly Installed.
plug.
engine and properly grounded.
depressed by the tip of front tab on bag handle
or blower chute for engine to start.
ing.
• Move throttle control / choke level to FAST
position.
• Depress the primer bulb firmly with your
thumb five times. Wait about two seconds
between each push. Do not use the primer to
restart a warm engine after a short shut
down. See Figure 7.
5b. When temperature is below 32 degrees F:
• Move throttle control / choke lever on engine
to CHOKE position. (A warm engine may not
require choking.) See Figure 7.
• If not using choke to start engine, move throt
tle control / choke lever to FAST position.
• Depress the primer bulb firmly with your
thumb five times. Wait about two seconds
between each push.
6. Standing behind the unit, grasp starter handle
and pull rope out until you feel a drag. Let the
rope rewind slowly.
7. Pull the rope with a rapid, continuous, full arm
stroke. Keep a firm grip on the starter handle.
Let the rope rewind slowly.
8. Repeat, if necessary, until engine starts. When
engine starts, move throttle /choke lever gradu
ally to FAST position.
9. if engine falters, move control lever to CHOKE
position, then back to FAST position.
10. ALWAYS keep the throttle control in the FAST
position when operating the Yard Vacuum.
TO EMPTY BAG
® Unhook bag straps from the lower handle and
unsnap bag clip from top of the lower handle.
See Figure 8.
® Grasp bag handle with one hand and pull lock
rod on mounting bracket with other hand toward
engine to release.
• Remove bag from over the rim of the discharge
opening. Refer to Figure 4.
» Twist the two buttons on the back of the bag to
unlock and empty contents. See Figure 8.
® Hold bag handle and bag clip while emptying the
contents.
* After bag is emptied relock buttons.
TO REMOVE BLOWER CHUTE
• Grasp blower chute with one hand and pull lock
rod on mounting bracket with other hand toward
engine to release. Refer to Figure 5.
• Remove blower chute from over the rim of the
discharge opening.
OPERATION
Place both hands on top of upper handle to push unit
over yard waste. Yard waste such as ieaves and pine
needles are vacuumed up through the nozzle and
shredded by the flail blades on the impeller assembly
and discharged into catcher bag or through blower
chute.
Do not attempt to shred or chip any material other
than vegetation found in a normal yard (i.e. branches,
leaves, twigs, etc.). Avoid fibrous plants such as
tomato vines until they are thoroughly dried out.
Material such as stalks or heavy branches up to 1 1/2"
in diameter may be fed into the chipper chute. See
Figure 9.
WARNING; Keep your hands away from
the nozzle opening and NEVER place your
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IMPORTANT; The flail screen located inside the
housing in the discharge area. If the flail screen
becomes clogged, stop engine and remove and clean
as instructed in the SERVICE AND ADJUSTMENT
section.
hands or arms inside of the chipper chute
when the engine is running. Doing so
could result in serious personal injury.
WARNING: Always survey the area to be
vacuumed thoroughly before operating the
Yard Vacuum. Running over obstruc
tions, such as small toys, can result in per
sonal injury as well as damage to the Yard
Vacuum.
MAINTENANCE
SCHEDULE
1—
o
Lubrication
3
o
o
tc
Clean equipment
Q.
Check engine oil
Change engine oil
UJ
z
Service air cleaner
o
z
UJ
Service spark plug
MAINTENANCE
</
</
Service muffler
Clean engine
GENERAL RECOMMENDATIONS
• Always observe safety rules when performing
any maintenance.
• The warranty on this Yard Vacuum does not
cover items that have been subjected to opera
tor abuse or negiigence. To receive full value
from the warranty, operator must maintain the
equipment as instructed in this manual.
• Some adjustments will need to be made periodi
cally to maintain your equipment properly.
• Follow the maintenance schedule.
• Periodically check all fasteners and make sure
they are tight.
WARNING: Always stop the engine and
A
disconnect and ground the spark plug wire
before performing any maintenance or
adjustments.
LUBRICATION
• Wheels- Place a few drops of SAE 30 oil on
each shoulder screw once a season.
See Figure 13.
• Nozzle height adjustment levers- Lubricate
nozzle height adjustment ievers with light oil.
Refer to Figure 6.
• Lock Rod- Lubricate the lock rod and compres
sion springs which attach to the mounting
bracket. Refer to Figure 4.
</
CLEAN EQUIPMENT
• Ciean the Yard Vacuum thoroughly after each
use.
• Wash the bag periodically with water. Allow to
dry thoroughly in the shade.
• If the flail screen becomes clogged, remove and
clean as instructed in the SERVICE AND
ADJUSTMENT section.
NOTE: Cleaning with a forceful spray of water is not
recommended as it could contaminate the fuel sys
tem.
CHECK ENGINE OIL
• Remove oil fill dipstick.
• Check oil level on dipstick. Level should be at
FULL mark.
• Replace dipstick and tighten.
CHANGE ENGINE OIL
• Only use high quality detergent oil rated with
API service classification SF, SG, or SFI. Select
the oil’s SAE viscosity grade according to the
expected operating temperature. Refer to oper
ation section for viscosity chart.
• Stop engine and wait several minutes before
checking oil level. With engine on level ground,
the oil must be to FULL mark on dipstick .
• Change engine oil after the first five hours of
operation, and every twenty-five hours thereaf
ter.
10
TO DRAIN OIL
Drain oil while engine is warm. Follow the instructions
given below.
• Drain the gas tank, start the engine and let it run
until the fuel lines and carburetor are empty.
• Remove oil fill dipstick.
• Tip unit on its side to drain through the oil fill
tube.
® When engine is drained of all oil, refill with
approximately 20 oz. of fresh oil. Refer to Gas
And Oil Fill-up in OPERATION section.
• Replace dipstick.
SERVICE AIR CLEANER
The air cleaner prevents damaging dirt, dust, etc.,
from entering the carburetor and being forced into the
engine and is important to engine life and perfor
mance. The air cleaner consists of a foam filter.
Never run the engine without an air cleaner com
pletely assembled.
To Service Air Cleaner:
• Remove foam filter from plastic housing on top
of engine.
• Wash in water and detergent solution, and
squeeze (do not twist) until all dirt is removed.
• Rinse thoroughly in clear water.
• Wrap in a clean cloth and squeeze (do not twist)
until completely dry, or allow to air dry.
• Saturate with engine oil and squeeze to distrib
ute oil and remove excess oil.
• Replace foam filter in plastic housing
NOTE: If the foam filter is torn or damaged in any
way, replace it.
WARNING: Temperature of muffler and
A
nearby areas may exceed 150° F(65°C).
Avoid these areas.
SERVICE SPARK PLUG
• Clean the spark plug and reset the gap to .030"
at least once a season or every 50 hours of
operation. See Figure 10. Spark plug replace
ment is recommended at the start of each sea
son. Refer to engine parts list for correct spark
plug type.
NOTE: Do not sandblast spark plug. Sparkplug
should be cleaned by scraping or wire brushing and
washing with a commercial solvent.
SERVICE MUFFLER
• Inspect muffler periodically, and replace if nec
essary.
• If your engine is equipped with a spark arrester
screen assembly, remove after every 50 hours
of use for cleaning and inspection. Replace if
damaged.
WARNING: Do not operate the Yard Vac
A
CLEAN ENGINE
• Clean engine by removing dirt and debris with a
• Frequently remove grass clippings, dirt, and
uum without a muffler or tamper with the
exhaust system. Damaged mufflers or spark
arresters could create a fire hazard.
cloth or brush.
debris from cooling fins, air intake screen,
levers, and linkage. This will help ensure ade
quate cooling and engine speed.
11
SERVICE AND ADJUSTMENTS
WARNING: Do not at any time make any
A
NOZZLE HEIGHT ADJUSTMENT
The nozzle can be adjusted to any of five positions,
ranging from 5/8" to 3 3/4" ground clearance. The
nozzle height has to be adjusted according to the
conditions. Move the height adjustment levers for
ward or backward to adjust the nozzle upward or
downward. See Figure 11.
NOTE: In general, raise the nozzle height to vacuum
a thick layer of leaves or to operate with the blower
chute. Lower the nozzle height for smoother sur
faces. Picture is shown without engine for clarity.
adjustment to the unit without first stopping
engine and disconnecting spark plug wire.
ENGINE SPEED
The engine speed on your Yard Vacuum has been
set at the factory. Do not attempt to increase the
engine RPM. If you think that the engine is running
too fast or too slow, take your Yard Vacuum to the
nearest Sears Service Center for repair and adjust
ment.
WARNING: Do not attempt to alter the
engine speed by tampering with the
A
REMOVING THE FLAIL SCREEN
If the discharge area becomes clogged, remove the
flail screen and clean area as follows.
1. Stop the engine. Make certain the chipper
2. Remove the vacuum bag or blower chute from
the unit as instructed in the OPERATION sec
tion to obtain access to flail screen. See Figure
engine’s governor linkage. Doing so could
result in serious personal injury and dam
age to the engine. The engine RPM has
been set at the factory.
shredder vacuum has come to a complete stop.
Disconnect and ground the spark plug wire
before unclogging the discharge chute.
12.
CARBURETOR ADJUSTMENT
WARNING: If any adjustments (e.g. carbu
retor) are made to the engine while the
A
The carburetor has been pre-set at the factory and
should not require adjustment. If your engine does
not operate properly due to suspected carburetor
problems, take your Yard Vacuum to a Sears Service
Center for repair and adjustment.
NOTE: A dirty air cleaner will cause the engine to run
rough. Be certain air cleaner is clean and attached to
the carburetor before adjusting carburetor.
engine is running, keep clear of all moving
parts. Be careful of heated surfaces and
muffler.
3. Remove hex screw on right side of unit that
attaches to the flail screen. See Figure 13.
12
Remove hex screw and flat washer on top of
rear housing near mounting bracket and the lock
nut that secures flail screen. See Figure 12 and
14.
Remove and clean the screen by scraping or
5.
washing with water. Reinstaii the screen.
SHARPENING OR REPLACING CHIPPER BLADE
Because the engine on this unit has a tapered crank
shaft, a special impeller removal tool (part number
753-0638) is required to remove the impeiler assem
bly. For further assistance, contact your Sears Ser
vice Center.
NOTE: When tipping the unit, empty the fuel tank
and keep engine spark plug side up.
1. Disconnect and ground the spark plug wire.
2. Remove the front hubcaps, shoulder screws,
wave washers, and bell washers that attach to
the front wheels. See Figure 15.
3. Remove the shoulder screws that go through the
pivot arms and height bracket adjusters to the
front support brace. See Figure 15.
4. Remove the three screws on the upper housing
that secure the nozzle cover and the nine
screws that secure the lower housing to the
upper housing. See Figure 16.
5.
Remove lock nut that secures flail screen to the
lower housing. The flail screen does not have to
be removed. See Figure 12 and 14.
6.
Remove the hex bolt, lock washer, and flat
washer that secure the impeller assembly to the
crankshaft. See Figure 17.
13
7.
Apply lubricant to the threads of impeller
removal tool and then thread the tool into the
crankshaft. Stop when the impeller assembly
can move on the crankshaft.
8
Remove the impeller assembly from the crank
shaft. Unthread the impeller removal tool from
the impeller assembly.
9. Remove the chipper blade using a 3/16" alien
wrench on the outside of the blade and 1/2"
wrench on the underside of impeller assembly.
10. Replace or sharpen chipper blade.
11. When sharpening blade, protect hands by using
gloves and follow the original angle of grind.
STORAGE
12. Reassemble by performing steps 1 through 9 in
reverse order.
• Tighten blade screws to 210 - 250 in-lbs.
• Tighten impeller bolt to 375 - 425 in-lbs.
NOTE: Make certain chipper blade is reassembled
with the sharp edge facing upward. See Figure 18.
Prepare your Craftsman Yard Vacuum for storage at
the end of the season or if the unit will not be used for
30 days or longer. A yearly check-up by your local
Sears Service Center is a good way to ensure that the
unit runs properly next season.
Yard Vacuum
• Clean the equipment thoroughly.
• Wipe equipment with an oiled rag to prevent rust.
Use a light oil or silicone to wipe.
• Service the engine following instructions below.
• Store unit in a clean, dry area. Do not store next
to corrosive materials such as fertilizer.
Engine
IMPORTANT: It is important to prevent gum deposits
from forming in essential fuel system parts such as
the carburetor, fuel filter, fuel hose, or tank during
storage. Also, alcohol blended fuels (called gasohol or
using ethanol or methanol) can attract moisture which
leads to separation and formation of acids during stor
age. Acidic gas can damage the fuel system of an
engine while in storage.
To avoid engine problems, the fuel system should be
emptied before storage of 30 days or longer. Follow
these instruction:
• Drain the fuel tank.
• Start the engine and let it run until the fuel lines
and carburetor are empty.
• Drain carburetor.
• Never use engine or carburetor cleaner products
in the fuel tank or permanent damage may
occur.
NOTE: Fuel stabilizer is an acceptable alternative in
minimizing the formation of fuel gum deposits during
storage.
• Add stabilizer to gasoline in fuel tank or storage
container.
• Always follow the mix ratio found on stabilizer
container.
• Run engine at least 10 minutes after adding
stabilizer to allow the stabilizer to reach the car
buretor.
• Do not drain the gas tank and carburetor if
using fuel stabilizer. Drain all the oil from the
crankcase (this should be done after the engine
has been operated and is still warm) and refill
the crankcase with fresh oil.
• If you have drained the fuel tank, protect the
inside of the engine as follows:
• Remove spark plug, pour approximately 1/2
ounce (approximately one tablespoon) of
engine oil into cylinder and crank slowly to
distribute oil.
® Replace spark plug.
Other
• Do not store gasoline from one season to
another.
• Replace the gasoline can if it starts to rust. Rust
and/or dirt in the gasoline will cause problems.
• Store unit in a clean, dry area. Do not store next
to corrosive materials, such as fertilizer.
NOTE: If storing in an unventilated or metal storage
shed, be certain to rustproof the equipment by coat
ing with a light oil or silicone.
14
TROUBLESHOOTING
Problem Possible Cause(s) Corrective Action
Engine fails to start
Loss of power; operation
erratic
Too much vibration Loose parts or damaged
Engine overheats
Unit does not discharge
Rate of discharge slows
considerably or
composition of discharged
material changes
Fuel tank empty or stale fuel.
Spark plug wire
disconnected.
Cannot puli recoil cord.
Choke not in ON position.
Faulty spark plug.
Safety switch not depressed.
Safety switch wire is not con
nected to engine or not prop
erly grounded.
Spark plug wire loose.
Unit running on CHOKE.
Blocked fuel line or stale fuel.
Water or dirt in fuel system.
Carburetor out of adjustment.
Low engine RPM.
impeller.
Carburetor not adjusted
Engine oil level low
Discharge chute clogged.
Foreign object lodged in
impeller.
Low engine RPM.
Vacuum bag is full.
Low engine RPM.
Chipper blade dull.
Fill tank with clean, fresh gasoline. Fuel will not last over
thirty days unless a fuel stabilizer is added.
Connect wire to spark plug.
Obstruction lodged in impeller. Disconnect spark plug wire
and remove lodged object.
Move CHOKE to ON position.
Clean, adjust gap or replace.
Safety switch must be depressed by the front tab on the
bag handle when securing the bag.
Connect safety switch wire to engine connector and ground
to mounting bracket.
Connect and tighten spark plug wire.
Move choke lever to OFF position.
Clean fuel line; fill tank with clean fresh gasoline. Fuel will
not last over thirty days unless a fuel stabilizer is used.
Disconnect fuel line at carburetor to drain fuel tank. Refill
with fresh fuel.
Contact your Sears Service Center.
Always run engine at full throttle.
Stop engine immediately and disconnect spark plug wire.
Have unit serviced by a Sears Service Center.
Contact your Sears Service Center.
Fill crankcase with proper selection of oil.
Stop engine immediately and disconnect spark plug wire.
Clean flail screen and inside of discharge opening. See
Maintenance section of this manual.
Stop engine immediately and disconnect spark plug wire.
Remove lodged object.
Always run engine at full throttle.
Empty bag.
Always run engine at full throttle.
Replace chipper blade or see your Sears Service Center.
NOTE: For repairs beyond the minor adjustments iisted above, piease contact your iocai Sears Service Center.
15
PARTS LIST
Sears Craftsman 4.5 H.P. Yard Vacuum Model 247.77010
16
Sears Craftsman 4,5 H.P. Yard Vacuum Mode! 247.77010
REF
NO.
1
2 725-3166
3
4
5
6 714-0104
7 736-0264 Flat Washer .330 ID x .630 OD
8
9 781-0778
10 747-1153
11 710-3008
12
13
15
16 710-0969 Screw #12-16 X 1.0 35
17 710-3195
18 710-3025
20 781-0720
PART
NO.
725-1700
710-0224 Hex Washer Screw #10-16 x .50 23 736-0119
629-0920
710-0604
732-0962
681-0122 Chipper Chute Ass’y
726-0454 U-Clip Lock Nut 5/16-18
710-0502A Hex Washer Screw 3/8-16 x 1.25
Switch Cover
Safety Switch
Wire Harness
Hex Washer Screw 5/16-18 x .625 25
Cotter Pin
Compression Spring
Mounting Bracket 29 715-0166
Lock Rod
Hex Cap Screw 5/16-18 x .75 31 736-0217 Lock Washer 3/8
Hex Cap Screw 5/16-18 x 4.5 36 712-3004A Lock Nut 5/16-18
Hex Cap Screw 5/16-18 x .625
Upper Housing 38 712-0158 Lock Nut 5/16-18
DESCRIPTION
REF
NO.
21 710-1054
22
24 712-0411 Hex Lock Nut 5/16-24
26 719-0329 Flail Blade
27
28
30 736-0247
32
33 681-0154 Screen Ass’y
34
37
PART
DESCRIPTION
NO.
Hex Screw 5/16-24 x 1.0
781-0490 Chipper Blade
Lock Washer 5/16
681-0152 Impeller Ass’y
781-0735 Pin Clip
711-0833B
710-0818
710-3038 Hex Cap Screw 5/16-18 x .875
781-0721 Lower Housing
731-1905 Nozzle Cover
Clevis Pin
Spiral Pin
Flat Washer 3/8 ID x 1.25 OD
Hex Cap Screw 3/8-24 x 2.0
17
Sears Craftsman 4.5 H.P. Yard Vacuum Model 247.77010
18
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